Manufacture of waterproof and non-exuding cements.



I06. COMPOSITIONS,

COATING OR PLASTIC. 94.-

Unii-nn sinins PATENT ornron.

RICHARD LIEBOLD, OF BERLIN, GERMANY.

MANUFACTURE OF WATERPROOF AND NON-EXUDING C-EMENTS.

To all whom it may concern: g, Be it known that I, RICHARD LIEBoLD, merchant, a subject of the Grand Duke cf Saxe-VVeimar, residing at Berlin, Germany, have invented certain new and useful Improvements in the Manufacture of Waterproof and Non-Exuding Cements, of which the following is a specification.

My invention relates to improvements in the manufacture of waterproof and non-exuding cements. M

"In order to accelerate o r retard the setting,

process of cement ant- Fanciers retain V for a longer time the water necessary for its 1, hardening, soda, potash or v sum have already been added to the gr I or land ccment n i1 y;rfii. i a .attjcnf nted to rfiider th e ceiiieiitw t r p roof and to prevent sweating 'of th stonc li y impregnating the cenien'ebieekswifith parailin-wax, coloor"stearin";-"* These processes lave lleen iitlie'i'to executed in such a manner that the cement clinkers are impreg natcd in a cold condition as lying ni tlie clinker 2 slid'oi inanymher place. The drying of the cement clinkers in a cold condition could only be effected in such a manner that the cement clinkers were spread out in very thin layers, whereby the water contained in the 0 impregnation mass could more quickly 1 evaporate, for if the impregnated cement \clinkers were not completely dry a t the suhsequent rindin recess, which naturally require a onger s ora'g a filling up of the sieves was to be apprehended during the grinding process. A premature setting of the cement also very easily occurred. This mode of manufacture therefore required an essential extension or usage of the clinkersheds, respectively, &c., whereby a considerable increase in the price of manufacture was caused, owing to the payment of interest on the plant; apart from the fact that the quality of the final product might sufl er damage by the use of incompletely-dried impregnated cement clinkers. In order to avoid these drawbr cks and also bring about a saving by storage of the cement clinkers in layers above each other, whereby an essential reduction of the amount of space hitherto required in the clinker-sheds and similar arrangements for storage could be attained, the cement clinkers are impregnated in a warm condition on the basis of the present invention. The water used for diluting the im- Specification of Letters Patent.

Application filed February 5, 1906. Serial No. 299.631-

'I;roadly, in impregnating cei ent in- Patentecl March 12, 1907.

pregnation mass is then evaporated in the shortest manner by the heat still contained in the cement clinkers, in consequence of which the same can be ground after a correspondingly brief period of time and a premature sctting of the cement is prevented.

The oi: ject of the processaccording to this invention is therefore to I: ring about a quick evaporation of the water contained in the iiripregnation mass for the purpose of making a nick grinding of the cement clinkers possil e, as well as to save the great costs for premses required for storage of the cement clinkers, at the same time preserving 'the good setting quality of the cement.

From what has I' een herein: efore stated it will Ie obvious that my method consists, ials while in a wa'fifi condition witi a water proofing and anti exuding mass? Such mass is'g'iie'rally a soap mass, and this soap mass may consist of a mixture of two hundred and forty-five rams stearin ten grams of otash b |I-Ivi nand twelye grams "of coIo 'Iionv dissolved 1n three fourtlisliters I:oi m wa er. This inixr c m'r'efissuificimt for the treatment of one hundred kilograms of cement clinkers, or the impregnating mass may be composed of three hundred grams of Ja anese wax and twenty grams of caustic otas 1 1880 ved in three-fourths liters 701 m water the latter mixture I: eing suffim regnation of one hundred kilograms of chi core. The ingredients set forth may be slightly modified within certain limits.

In claiming my method I employ the designation anti-exuding, this leing a simple way of defining one of the characteristics of the impregnating mass or that particular characteristic thereof which protects the ce- 5 ment material against exudation.

The ground cement possessing the qualities of complete impermea'ility and nonexudation is thereu on quite ready for use, and the same may e employed even in small quantities with plaster and concrete without requiring any further treatment for insuring impermeaulity, such as the addition of asphalt, coatings, &c.

Having now particularly descri ed the nato 5 ture of my invention, what I claim is 1. A method consisting in impregnating cement material while in a Warm condition with awater roofing and anti-exuding mass.

2. A met 0d consisting in impregnating 11o cement material While in a warm condition with awaterproofing and anti-exuding soap 1 mass.

3. A method consisting in impregnating cement material while 1n a warm condition with fatty acids in the form of soap.

4. A method consisting in impregnating cement material While in a warm condition with a mixture composed of stearic acid and potash.

5. A method consisting in impregnating cement material while in a warm condition RICHARD LIEBOLD.

\Vitnesses:

HENRY HAsPER, VOLDEMAR HAUPT. 

